package jdbc;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;

public class JDBCDemo10 {
    public static void main(String[] args) {
        try {
            Connection connection = DBUtil.getConnection();
            connection.setAutoCommit(false);

            String sql = "DELETE FROM user " +
                    "WHERE id=? ";

            PreparedStatement ps = connection.prepareStatement(sql);
            ps.setInt(1,2);

            int num = ps.executeUpdate();
            System.out.println(num>0?"删除成功":"删除失败");

//            connection.rollback();
            connection.commit();
            System.out.println("事务提交了，修改算数了");

        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}
